Nail-machine



(No Model.)

B. P. HURD.

NAIL MACHINE.

No. 399,410. Patented Mar. 12, 1889.

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NITED STATES PATENT OFFICE.

EIHYARD P. I'IURD, OF BOS"ON, MASSACHUSETTS, ASSIGNOR TO THE MCKAY d: COPELAND IJXSTING MACHINE COMPANY, OF PORTLAND, MAINE.

NAIL-MACHINE.

SPECIFICATION forming part of Letters Patent No. 399,410, dated March 12, 1889.

Application filed November 15, 1887. gerial No. 255,200. (No model) To aZZ whom it may concern.- base-plate, A, having suitable legs or uprights Be it known that I, EDWARD P. IIURD, of which support the table A. The base-plate Boston, county of Suffolk, and State of Mashas suitable uprights which contain bearings saohusetts, have invented an Improvement in a a for the power-shaft B, having usual fast 5 Machines for Manufacturing Nails, of which and loose pulleys. The shaft 13 has a bevelthe following description, in connection with pinion, B, which engages a bCVQl-gGd1,B on the accompanying drawiu gs, is a specification, and rotates the vertical shaft B which abov like letters on the drawings representing like the said gear has a toothed wheel, C, that en- P gages the toothed wheels C C fast on the up- IO 7 This invention has for its object the proright shafts (1 C", the said shafts having fast duction of a machine f or the mamifacture of to them, respectively, the face-cams C C. The nails from wire. grooves in these face-cams receive like rollers In accordance with my invention the wire or other studs, 1), (shown by dotted lines,) of a to be used is intermittingly grasped at points i the point-conuwessing dies Z), titted to slide 15 between its ends by clamping and upsetting in guidewayslfi on the table A, the front end dies which have a movement toward and from of the said dies being adapted, as best shown each other to not only grasp and release the in Fig. l, to act in succession upon each nail wire at intervals, but also to enable a short or blank of the connected series of blanks and length of the said wire between the clamping form by compression a point, as 2, for each 20 and upsetting dies to be upset at regular inblank or nail next the head of the blank or tervals to constitute a series of substantially I nail to which it. is joined in the stringof nails. equidistant enlargements of proper shape to The toothed wheel C C engage, respectform heads for a series of nail-blanks, which ively, the toothed wheels D D, fast on the are left, preferably, in string form or joined vertical shafts D D the said shafts above 2 5 together, the points for the nails being therethe table A having fast on them, respectafter formed by point-compress1ng dies, which ively, the facecams D" D, each cam having act upon the metal between adjacent heads a groove which receives in it like iollers or and close to what is to be the top of the head other studs, as c (I, carried, respectively, by of the next nail, the said pointtorming dies the links (1 d, the links 0 being connected 0 serving to compress the body of the blank to the toggle-levers 0 while the links (7 are and form a tapering point, the point being connected to like toggle-levers, (1

formed, lmwever, without necessarily sever- Each set of toggle-levers d is composed 'ing the nails from the string and without of two links. Referring to the toggle-levers waste of metal. one of the links of each set is mounted on S 5 35 My invention consists, essentially, in a naib a fixed stud, 3, while the other links thereof making machine adapted to operate upon a are joined by pins 4 with the upsetting jaws wire, the clamping-jmvs, the upsettirig-jaws c, the adjacent ends of the two links being to grasp the wire near the clamping-jaws, and united by a pin, 5, the latter also serving to means to move one set of the said jaws tojoin the link 1; to the said toggle-lever c'-. 9

4o ward the other to upset the wire grasped bo- The upsetting dies 0, as herein shown, are

tween them, combined with the independent 1 composed of short bars provided, preferably, pointing-dies and with means to actuate them, with T-shapcd or equivalent-shaped grooves, whereby the headed blanks yet connected to (see Fig. 3,) to fit and be guided upon corregether are pointed, substantially as will be despondingly-shaped guide-ribs 6, fast upon or 45 scribed. forming part of the elamping-jawsf f, fitted Figure l is a top or plan view of amachine to slidehorizontallyin guidewaysfj", erected embodying my invention, the same being paron or forming part of the table A. The uptiallybroken out to show some of the gearing setting-dies have acting faces, as in Fig. 3, below the bed-plate; Fig. 2, a front elevation, grooved to enable them to readily grasp 50 and Fig. 3 a sectional detail in the line :17. snugly between them the wire to be made The framework consists, essentially, of a into nails.

The extent of reciprocation of the -upsetting-dies toward the grooved acting faces 80f the clamping-dies ff, and consequently the size of the head, is determined by the length of the open or other space, 10, between the upsetting and clamping jaws.

One link of each pair of links forming the toggle-levers d is pivoted or mounted to turn on a stud, 24, erected on the table A, while the other co-operating link is pivoted on a stud, 25, erected on the clamping-jawf. The shape of the grooves in the cams D D are such as to cause the clamping-jaws to close upon the wire between them before the upsetting-jaws a start to move longitudinally toward the clamping-jaws to upset the wire between them.

Fig.1 shows the wire 9 as held firmly by the clamping-jaws f and as grasped between the acting faces of the upsetting-jaws, both the said sets of jaws grasping the wire very firmly. In this condition the toggles are straightened, the cams D" and D keeping the jaws f closed on the wire, and as the upsetting-jaws 6 move toward the clamping-jaws f the short length of metal or wire between the said jaws is upset, throwing out a collar or flange, which constitutes a head, as 12. The wire g, taken from a suitable coil, ball, or reel and led through, preferably, a straightening apparatus, (not shown,) will be passed to and through between the jaws e f, and will be upset, as stated, to form heads, and thereafter the wire provided with a series of collars or heads thereon at intervals will be fed longitudinally by usual feeding devices, (not shown,) which will present it, as shown, to the action of the point-compressing dies b',which, acting upon the blank close to the head, will form by compression a point, as 2, upon the nail. The

wire having been acted upon to form heads and points, as stated, leaving a series of nails mechanical equivalents for the said devices.

I have not herein shown a feeding mechanism for the wire, as the same may be of any usual construction commonly used for feeding wire intermittingly.

I clain1 1. In a nail-making machine adapted to operate upon awire, the clamping-jaws, and the upsetting-jaws to grasp the wire near the clamping-jaws, and means to move one set of the said jaws toward the other to upset the wire grasped between them to form the head of a nail, combined with the independent pointing-dies to act on the upset wire after it has been released by the clamping-jaws and fed forward, and with means to actuate the said pointing-dies, whereby the headed blanks name to this specification in the presence of.

two subscribing witnesses.

EDIYARD P. HURD.

\Vitnesses:

G. WV. GREGORY, B. DEWAR. 

